Electrochemical behaviour of X80 pipeline steel with alumina coating

Huang, Min; Zhang, M-X.; Wang, Y.; Zhang, P.; Xu, A-J.

doi:10.1179/1743294414y.0000000435

Cited by 11 publications

(3 citation statements)

References 20 publications

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“…Many materials were used to coat metallic pipelines and fabricate non-dielectric pipes, one of which was an alumina (ε r = 9.4) torus. Ceramic materials have been widely used in pipeline manufacturing, such as the coating for metallic pipelines [42][43][44], ceramic pipes for irrigation [45], heat transmission [46,47], sewer pipes application [48,49], and ceramic-lined pipes [50,51], which have advantages with respect to corrosive resistance, high strength, heat resistance, and thermal stability. Dimensions of ceramic pipes are various.…”

Section: Simulation Resultsmentioning

confidence: 99%

Non-destructive evaluation of pipes by microwave techniques and artificial neural networks

Xie¹,

Yang²,

Yuan³

et al. 2020

Meas. Sci. Technol.

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Near-field imaging based on an electromagnetic sensor has been widely used for nondestructive detection. An approach to detect the near-surface defects in pipeline coatings and dielectric pipelines is proposed. Based on the characteristics of resonant frequency shifts, a novel method using artificial neural network (ANN) is established to quantitatively evaluate circular-section shape defects in pipes, such as air bubbles in pipeline coating layers or qualitative characterize non-circular section-shape defects. The proposed method has three important modules: a new resonator for data acquisition, a signal-processing algorithm for data preprocessing, and an ANN for quantitative imaging. In the designed sensor, we extend the tip of the sensing ring and introduce an appending in the ring gap for high sensitivity. Simulations show that the sensor can detect a defect with a radius as small as 0.7 mm. The raw resonant frequency shifts obtained by the sensor scanning at an angle interval around the specimen first are preprocessed by curve fitting, sampling, and adaptive data interpolation or truncation. Then, using an ANN, the relationships among resonant frequency shifts, external radius of the specimen, and defect size are modeled for imaging of circular-section shape defects. Preliminary simulations and measurements illustrate the efficacy of the method. Consequently, a contactless, high-resolution, near-field imaging measurement based on sensor scanning for inspecting pipe structures is obtained.

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Section: Simulation Resultsmentioning

confidence: 99%

Non-destructive evaluation of pipes by microwave techniques and artificial neural networks

Xie¹,

Yang²,

Yuan³

et al. 2020

Meas. Sci. Technol.

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show abstract

“…There are two reasons to choose this high-pulsed power CVD technique to coat DLC films on the surface of the 13Cr SMSS: first, the structure of 13Cr SMSS is martensite and cannot bear the high temperatures of conventional CVD technique; and second, the main applications of the 13Cr SMSS are as tubes for crude oil excavation and transport, which require excellent tribological properties of DLC films on the inner surface of the tubes [18]. Finally, there is rarely to find the study on the mechanical and tribological enhancement of the specific 13Cr SMSS by coating technique, which needs researchers to explore the mechanism of the coating effect and the deposition parameters coped to this specific substrate.…”

Section: Introductionmentioning

confidence: 99%

DLC (H) coated 13Cr SMSS by high-pulsed power CVD technique

Zhang

Chen

Deng

et al. 2020

Surface Engineering

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Hydrogenated diamond-like carbon (DLC: H) films were successfully fabricated on the surface of 13Cr super martensitic stainless steel by high-pulsed power chemical vapour deposition. The mechanical and tribological properties of the films related to the substrate bias voltages were investigated. The results showed that the surface hardness and tribological properties of the substrate after DLC film deposition were improved. The DLC films became dense, the grain size and roughness reduced, and the deposition rates increased as the bias voltage increased. In addition, the dense DLC films directly led to high nanohardness and elastic modulus. The H content decreased with an increase in the bias voltage, which may be the primary reason for nanohardness and modulus enhancement. Due to the relatively high H/ E* and H 2 /E* 3 ratios of films corresponded to high elastic strain and plastic deformation resistances reduced the wear loss, and the localized graphitization on the surface provided solid lubrication.

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“…However, steel tends to be corroded in the atmospheric condition causing the consuming of material resources with the gradual deterioration of ecological environment. [1][2][3] Over the course of the past 30 years, intense research efforts have been devoted into the improvement of the corrosion resistance of various forms of carbon steel. All kinds of strategies in particular coating technologies have been proposed to extend the life time of steel constructions and medical implants.…”

Section: Introductionmentioning

confidence: 99%

Effects of nanoparticles on the corrosion resistance of fluoropolymer coatings on mild steel

Song

Chen

2017

Surface Engineering

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The surfaces of nanoparticles of SiO 2 , TiO 2 and Al 2 O 3 have been modified by γ-(2,3-epoxypropoxy) propyltrimethoxysilane (KH-560) in order to achieve proper dispersion of nanoparticles and possible chemical interactions between nanoparticles and polymeric coatings, and then the homogeneous fluoropolymer coatings containing nanoparticles of SiO 2 , TiO 2 and Al 2 O 3 have been successfully prepared on mild steel substrates. The surface morphologies of the coatings were characterised by field emission scanning electron microscopy. The effects of incorporating various nanoparticles on the corrosion resistance of fluoropolymer-coated steel were investigated by potentiodynamic polarisation curve, electrochemical impedance spectroscopy and salt spray tests. The results showed that KH560-modified nanoparticles can decrease agglomeration effectively, and the nanoparticles play a beneficial role in improving the corrosion resistance of the coated steel significantly. In addition, SiO 2 nanoparticles are of the best effect among three kinds of nanoparticles.

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Electrochemical behaviour of X80 pipeline steel with alumina coating

Cited by 11 publications

References 20 publications

Non-destructive evaluation of pipes by microwave techniques and artificial neural networks

Non-destructive evaluation of pipes by microwave techniques and artificial neural networks

DLC (H) coated 13Cr SMSS by high-pulsed power CVD technique

Effects of nanoparticles on the corrosion resistance of fluoropolymer coatings on mild steel

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